Above: Indie rockers Modest Mouse are rumored to be the secret musical guest at the Firefly Music Festival in Dover this summer.

The schedule for next month’s three-day Firefly Music Festival in Dover was announced Friday, sending music fans scrambling to make sure their favorite bands aren’t playing at the same time across Firefly’s four stages.

The music festival tradition of scouring the schedule for conflicts was set off around 1 p.m. when the schedule was posted online, showing what bands will be playing across the festival’s four stages, which have been named Firefly Stage, The Lawn, The Backyard and The Perch.

For those mostly drawn to the grounds near Dover International Speedway by the trio of headliners, have no fear because none of them will face competition from other stages. Each headliner will play from 9:30 p.m. to 11 p.m. with Jack White on Friday, The Killers Saturday and The Black Keys on Sunday as the festival’s final performance of the weekend.

Among the other goodies buried in the schedule is a surprise musical guest performing Saturday night at 6:30. Paste magazine has reported that Portland indie rockers Modest Mouse is the additional band, bringing the total number of acts to 48. (Firefly will officially confirm the secret act Monday.) Also, Rehoboth Beach-based blues act Lower Case Blues — the only Delaware act to make the cut — will perform Sunday morning at 11:25 with a 30-minute set.
In addition to completing the musical schedule, Firefly’s team has also unveiled the beer and food selections that festival-goers will be noshing on.

Firefly and Dogfish Head are partnering and that means not only will all of Dogfish’s most popular beers be sold at the festival site, but an exclusive new beer has been brewed just for the rock fest.

Dogfish will unveil the new Firefly Ale at the festival, a pale ale brewed with English Marris Otter barley and American Calypso hops that clocks in with a 5% ABV. (Dogfish’s Sam Calagione, a big music fan himself, included the English barley as a nod to the Sex Pistols and the American hops represent The Ramones.)

The Dogfish beers will be exclusive to The Brewery and Anheuser-Busch-brand beers will also be available on the festival grounds, organizers say.

As for the grub, eight food vendors were also announced this week, curated by Firefly’s organizers, including The Burger Joint (meat and veggie burgers), Trattoria (pizza), Salud (Mexican) and Sweet Tooth (ice cream) to name a few.